Specification Sheet

9
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DDR3-1866 Speed Bins and Operations
Speed Bin
DDR3-1866M
Unit
NOTE
CLnRCD-nRP
13-1313
Parameter
Symbol
min
max
Internal read command to first
data
tAA
13.92
13
(13.50)
5,11
18.00
ns
11
Internal read command to first
data with read DBI enabled
tAA_DBI
tAA(min) + 2nCK
tAA(max) +2nCK
ns
11
ACT to internal read or write delay
time
tRCD
13.92
(13.50)
5,11
-
ns
11
PRE command period
tRP
13.92
(13.50)
5,11
-
ns
11
ACT to PRE command period
tRAS
34
9 x tREFI
ns
11
ACT to ACT or REF command
period
tRC
47.92
(47.50)
5,11
-
ns
11
Normal
Read DBI
CWL = 9
CL = 9
CL = 11
tCK(AVG)
1.5
1.6
ns
1,2,3,4,10
,11
CL = 10
CL = 12
tCK(AVG)
Reserved
ns
1,2,3,4,10
CWL = 9,11
CL = 10
CL = 12
tCK(AVG)
Reserved
ns
4
CL = 11
CL = 13
tCK(AVG)
1.25
<1.5
ns
1,2,3,4,6
CL = 12
CL = 14
tCK(AVG)
1.25
<1.5
ns
1,2,3,6
CWL = 10,12
CL = 12
CL = 14
tCK(AVG)
Reserved
ns
1,2,3,4
CL = 13
CL = 15
tCK(AVG)
1.071
<1.25
ns
1,2,3,4
CL = 14
CL = 16
tCK(AVG)
1.071
<1.25
ns
1,2,3
Supported CL Settings
9,11,12,13,14
nCK
12,13
Supported CL Settings with read DBI
11,13,14 ,15,16
nCK
13
Supported CWL Settings
9,10,11,12
nCK